#include <iostream>
using namespace std;

// 一个简单的C++示例

int add(int a, int b);

int main() {
    int x, y;
    cout << "Enter two numbers:" << endl;
    cin >> x;
    cin >> y;
    int sum = add(x, y);
    cout << "The sum is : " << sum << '\n';

    return 0;
}

int add(int a, int b){
    return a + b;
}